Peter Paul Kreuder (18 August 1905 – 28 June 1981) was a distinguished German-Austrian pianist, composer, and conductor, recognized for his significant contributions to musical theatre and film music. Born in Aachen, Germany, he was the son of a Kammersänger and began his musical education early, studying at the Cologne Conservatory and music academies in Munich, Berlin, and Hamburg. By the age of 13, he was already a repetiteur at the Hamburg City Theatre.

Kreuder's career was marked by his pioneering efforts in integrating jazz and swing elements into German music, which was particularly notable during the 1930s and 40s, a period when such styles were often discouraged in Germany. Despite joining the Nazi Party in 1932, he resigned two years later and emigrated to Sweden in 1939 due to the political climate, although he returned to Germany in 1941 after facing threats against his family.

He was a prolific composer for film, contributing music to around 150 movies, and was associated with renowned artists like Marlene Dietrich and Zarah Leander. His work on the film "The Blue Angel" with Friedrich Hollaender is particularly noteworthy. Kreuder also composed operettas, musicals, and operas, including "Der Zerissene" and "Der Postmeister."

After World War II, Kreuder adopted Austrian citizenship and continued his career in South America, conducting radio orchestras in Brazil and Argentina, where he was honored with the title of professor by Evita Peron. He later returned to Europe, where he resumed composing for films and theatre.

Kreuder was married four times and passed away in Salzburg, Austria, in 1981, leaving behind a rich legacy of musical compositions that continue to be celebrated. His life and work exemplify the vibrant cultural exchanges and challenges of his era, and his influence on the development of light music in Germany remains significant.